I just looked at the nutrition info for Whitey's. It's not as bad as I would have expected. I'll have to eat there more often. A single White Castle without cheese is 135 mg, a double is 200mg. The cheese only adds 20 calories, but 115 mg of sodium. So, cheeseburgers need to be avoided. The Fries are only 15 mg. If you keep the portion sizes reasonable, this doesn't look too bad.

Let's see... 2 doubles and an order of fries = 595 calories and 415 mg sodium. Not too bad. Fat is a little high. But, this would be a convenient quick meal that wouldn't screw with a low sodium diet.

It's almost like your numbers include 2 slices of cheese. Wait, isn't there half a slice of cheese on a WC cheeseburger? Perhaps there used be a full slice? The cheese adds 2g fat + 115 mg sodium. And, that would pretty much explain the difference.